diff --git a/ethclient/ethclient.go b/ethclient/ethclient.go
index eeb67f9bb4..c761d4f8d3 100644
--- a/ethclient/ethclient.go
+++ b/ethclient/ethclient.go
@@ -85,28 +85,27 @@ func (ec *Client) BlockByHash(ctx context.Context, hash common.Hash) (*types.Blo
 	return ec.getBlock(ctx, "eth_getBlockByHash", hash, true)
 }
 
-// BlockByNumber returns a block from the current canonical chain. If number is nil, the
-// latest known block is returned.
+// BlockByNumber returns a block from the current canonical chain.
+// If `number` is nil, the latest known block is returned.
 //
-// Note that loading full blocks requires two requests. Use HeaderByNumber
-// if you don't need all transactions or uncle headers.
-// if you want to use tag like earliest, latest, finalized, safe, or finalized, you can use the
-// UnmarshalJSON fuction to get the corresponding number
-// eg:
-// var bn rpc.BlockNumber
-// err := json.Unmarshal([]byte(`"finalized"`), &bn)
-// you will get -3  and you can use for the number param
+// Use `HeaderByNumber` if you don't need full transaction data or uncle headers.
+//
+// Supported special block number tags:
+// - `earliest`  : The genesis (earliest) block
+// - `latest`    : The most recently included block
+// - `safe`      : The latest safe head block
+// - `finalized` : The latest finalized block
+// - `pending`   : The pending block
+//
+// Example usage:
+//
+// ```go
+// BlockByNumber(context.Background(), big.NewInt(int64(rpc.LatestBlockNumber)))
+// ```
 func (ec *Client) BlockByNumber(ctx context.Context, number *big.Int) (*types.Block, error) {
 	return ec.getBlock(ctx, "eth_getBlockByNumber", toBlockNumArg(number), true)
 }
 
-// BlockByNumber returns a block from the current canonical chain. If tag is nil, the
-// latest known block is returned.
-// you can use the special tag earliest, latest, finalized, safe, or finalized.
-func (ec *Client) BlockBySpecialTag(ctx context.Context, tag string) (*types.Block, error) {
-	return ec.getBlock(ctx, "eth_getBlockByNumber", tag, true)
-}
-
 // BlockNumber returns the most recent block number
 func (ec *Client) BlockNumber(ctx context.Context) (uint64, error) {
 	var result hexutil.Uint64
@@ -223,8 +222,21 @@ func (ec *Client) HeaderByHash(ctx context.Context, hash common.Hash) (*types.He
 	return head, err
 }
 
-// HeaderByNumber returns a block header from the current canonical chain. If number is
-// nil, the latest known header is returned.
+// HeaderByNumber returns a block header from the current canonical chain.
+// If `number` is nil, the latest known block header is returned.
+//
+// Supported special block number tags:
+// - `earliest`  : The genesis (earliest) block
+// - `latest`    : The most recently included block
+// - `safe`      : The latest safe head block
+// - `finalized` : The latest finalized block
+// - `pending`   : The pending block
+//
+// Example usage:
+//
+// ```go
+// HeaderByNumber(context.Background(), big.NewInt(int64(rpc.LatestBlockNumber)))
+// ```
 func (ec *Client) HeaderByNumber(ctx context.Context, number *big.Int) (*types.Header, error) {
 	var head *types.Header
 	err := ec.c.CallContext(ctx, &head, "eth_getBlockByNumber", toBlockNumArg(number), false)